10 seconds is so long. In the early game, by the time you can use it you've either already started another squirmish with your enemies or your ally has already leveled up.
In most situations I've experienced, reducing it to 8 seconds would have been short enough for me to use the passive while still being active in lane.
softest boy1 votesI have always loved Zilean, but just don't play him that often because I don't feel effective with my passive. This might help a little, but his passive still feels weak. A lot of the time they will level up before I can even get to them to use my passive haha.
xelaker1 voteshis passive is such a pain atm, between the long cd and the fact that nobody stands still so i can level them up lol
Illâoi Evê Siôn1 votesSometimes when I try and level someone up I'll stutter after them for ages before I resign to using my E to catch up :/